Gearcase cover



FIG. 1 is a perspective view of a gearcase cover showing my new design;

FIG. 2 is a front elevational view of the gearcase cover of FIG. 1, the opposite side being plain and unornamented;

FIG. 3 is a left side elevational view, the opposite being a mirror image;

FIG. 4 is a top plan view; and,

FIG. 5 is a bottom plan view. 

The ornamental design for a gearcase cover, as shown and described. 